Ios 使用AKPickerView保存选择

项目描述

我有一个左边的抽屉，里面有很多选择。其中之一是设置选项

设置选项中有一个表视图。我已经在一个牢房里埋了一个。AKPickerView让我可以选择用户希望在整个应用程序中使用的动画

但是，当选择动画并重新打开“设置”视图时，选择器会自动重置

下面是如何设置的

cellForRowAtIndexPath:

            //Animation Picker
            self.pickerView = [[AKPickerView alloc] initWithFrame:cell.bounds];
            self.pickerView.delegate = self;
            self.pickerView.dataSource = self;
            self.pickerView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
            [cell addSubview:self.pickerView];

            self.pickerView.font = [UIFont fontWithName:@"HelveticaNeue-Light" size:20];
            self.pickerView.highlightedFont = [UIFont fontWithName:@"HelveticaNeue" size:20];
            self.pickerView.interitemSpacing = 25.0;
            self.pickerView.fisheyeFactor = 0.0002;
            self.pickerView.pickerViewStyle = AKPickerViewStyle3D;

            zoom = @"Zoom Out";
            drop = @"Drop In";
            push = @"Push";

            self.titles = @[zoom, drop, push];

            [self.pickerView reloadData];

[self.pickerView selectItem:[[NSUserDefaults standardUserDefaults] integerForKey:kAnimationTypeKey] animated:false];

计数、标题和选择：

- (NSUInteger)numberOfItemsInPickerView:(AKPickerView *)pickerView {
    return [self.titles count];
}

- (NSString *)pickerView:(AKPickerView *)pickerView titleForItem:(NSInteger)item {
    return self.titles[item];
}

- (void)pickerView:(AKPickerView *)pickerView didSelectItem:(NSInteger)item {

    if ([self.titles[item] isEqual:zoom]) {
        [[NSUserDefaults standardUserDefaults] setObject:@"Zoom Out" forKey:@"Zoom"];
        [[NSUserDefaults standardUserDefaults] synchronize];
    }

    else if ([self.titles[item] isEqual:drop]) {
        [[NSUserDefaults standardUserDefaults] setObject:@"Drop In" forKey:@"Drop"];
        [[NSUserDefaults standardUserDefaults] synchronize];
    }

    else if ([self.titles[item] isEqual:push]) {
        [[NSUserDefaults standardUserDefaults] setObject:@"Push" forKey:@"Push"];
        [[NSUserDefaults standardUserDefaults] synchronize];
    }

    NSLog(@"%@", self.titles[item]);
}

如何使选择器保存滚动位置或保存所选项目，使其在重新打开视图时保持不变

---

任何帮助都将不胜感激。

如果您希望在使用应用程序时数据保持静止，并且当您关闭应用程序时，数据将不再重要，则应使用persistence（）。但是，如果您希望它保留（数据），无论您应该使用什么核心数据。

多亏了开发人员，我成功地使用了下面的代码：

我要做的是将其移动到viewDidLoad：

//Picker Titles
zoom = @"Zoom Out";
drop = @"Drop In";
push = @"Push";
self.titles = @[zoom, drop, push];

cellForRowAtIndexPath:

            //Animation Picker
            self.pickerView = [[AKPickerView alloc] initWithFrame:cell.bounds];
            self.pickerView.delegate = self;
            self.pickerView.dataSource = self;
            self.pickerView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
            [cell addSubview:self.pickerView];

            self.pickerView.font = [UIFont fontWithName:@"HelveticaNeue-Light" size:20];
            self.pickerView.highlightedFont = [UIFont fontWithName:@"HelveticaNeue" size:20];
            self.pickerView.interitemSpacing = 25.0;
            self.pickerView.fisheyeFactor = 0.0002;
            self.pickerView.pickerViewStyle = AKPickerViewStyle3D;

            zoom = @"Zoom Out";
            drop = @"Drop In";
            push = @"Push";

            self.titles = @[zoom, drop, push];

            [self.pickerView reloadData];

[self.pickerView selectItem:[[NSUserDefaults standardUserDefaults] integerForKey:kAnimationTypeKey] animated:false];

和（AKPickerView*）pickerView didSelectItem：

[[NSUserDefaults standardUserDefaults] setInteger:item forKey:kAnimationTypeKey];

这让我重新加载视图并保留所选项目…到目前为止：）

现在我只需要弄清楚如何正确地保存每个键的用户默认值